Mechanism for holding electrotype-plates.



No. 757,603. t PATENTBD'APR-19, 1904.

-' c. w. EBBRHARD.

MBGHANISM POR HOLDING ELEGTROTYPE PLATES.

APPLICATION FILED U-IB 30. 1903. I0 HUDBL.

UNITED STATES Patented April 19, 1904;

PATENT OEEICE.

MECHANISMFQR HoLDlNc-i ELEoTRoTYPE-PLATES.

SPECIFICATION formingpart of Letters Patent No. 757 ,603, dated April 19, 1904.

Application filed June 30, 1903. Serial No. 163,680. (No model.)

To all whom it may concern.: v

Be it known that I, CHARLES W. EBERHARD,

. a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented a new and useful Mechanism for Holding Electrotype-Plates, of which the following is a specification in its best form now known to me, reference being had to the accompanying drawings, in which similar numerals indicate the saine parts throughout the several views.

My invention relates to mechanism of the class described for holding the electrotype and other-printing plates in position for printing.

The object of my invention is to provide such mechanism which can be easily and cheaply manufactured, which shall be efficient in operation and not liable to easily get out of order, and which will hold an electrotypeplate rmly in position without any variation.

My invention consists in many details of construction, which will hereinafter be more fully described and claimed. 1

Referring to the drawings, Figure 1 is a plan view of an electrotype-plate bearing the Word Coal held in position by the mechanism of my invention. Fig. 2 is a vertical sectional view of the plate and mechanism of my invention, showing the way in which the plate is held. Fig. 3 is a detail plan bottom view of the electrotype-plate, taken on line 3` of Fig. 2. Fig. 4; is a detail bottom View of the mechanism shown in Fig. 2.

The electrotype-plate illustrated in Figs.V 2 and 3 of the drawings is fully described and claimed in detail in an application executedl by me, tiled June 30, 1903, Serial N o. 163,67 9. In commercial practice of the present day it is customary for advertisers to furnish electrotypes of cuts which they wish to have placed in their` advertisements and send the same to the various papers and magazines in which their advertisements ,are to appear for use in the advertising-columns of such papers or magazines. In order to save postage, it is desirable to have the plate as thin as possible, and in order to have the plate the proper height for printing mechanism must be provided for holding the electrotype rigidly in position at the desired height.

Again referring to thedrawings, numeral 8 indicates such an electrotype, which may be of the form shown or of any one of the other forms in commercial use. In order to hold this plate in position, I provide two bases 9 and 10, cut away in the line 11 to save metal and reinforced by cross-girders l2, as shown. In the top of the outer edge of base 9 I provide an angular rule 13, and in a corresponding position on base 10 I provide a similar rule 14C. These rules are preferably made of brass and are, as shown, placed at about an angle of forty-five degrees with the tops 15. of the bases and are preferably rigidly secured to the bases. On the electrotype-plate 8 I cut two slots 16 and 17 at such an angle and in such a position that they are adapted to have the rules 13 and 14 slide into them when the mechanism is in the proper position, as shown in Fig. 2. In the vertical inner side of one base, as 9, I rigidly secure a horizontal rule 18, and in the other base, as 10, is out a slot 19, in which this rule 18 is adapted to t, asv shown in Fig. 2.

In the operation of my invention I take two detached and separable bases 9 and 10 and place on them the desired electrotype in such a way that the rules 13 and 14 lit into the slots 16 and 17 in the electrotype, as shown in Fig. 2, and compress the two bases together to the position shown in Fig. 2. I now place the two bases with the electrotype upon them between the column rules of the form, (not shown,) which serves to lock all of these parts 'in position in theusual way. When now it is desired to change the electrotype, I unlock the column-rules, take hold of the electrotype and lift it out, the action of lifting the electrotype bringing the pressure on the inside of the rules 13 and 14, and thereby forc- 'ing the bases 9 and 10 apart, the width of IOO ing the bases 9 and 10 bodily from the column of printed matter and that it is not necessary to slide the electrotype lengthwise of the rules 13 and 14.-

Having,` thusdescribed my invention, what I claim as new, and desire to secure by Letters Patent, is l v In mechanism of the class described, two separable bases 9 and l0, adapted to t to- 10 gether, locking mechanism secured to one of said bases adapted to engage with the other base, an inclined rule near theouter edge of the top of each base inclined toward the opposite rule adapted to t in slots cut in the base of the electrotype substantially as shown I 5 and described for the purposes set forth.

CHARLES W. EBERHARD.

Witnesses:

BLANCHE L. WEST, DWIGHT B. CHEEVER. 

